[alsa-devel] [Cooker] Totem playing videos at fast-forward speed ?
Herton Ronaldo Krzesinski
herton at mandriva.com.br
Wed Apr 14 21:12:58 CEST 2010
Em Ter 13 Abr 2010, às 18:57:51, Éric Piel escreveu:
> Op 07-04-10 00:23, Herton Ronaldo Krzesinski schreef:
> > Em Ter 06 Abr 2010, às 18:52:08, Éric Piel escreveu:
> >> Op 06-04-10 22:29, Frank Griffin schreef:
> >>> Anssi Hannula wrote:
> >>>> Try mplayer:
> >>>> mplayer file
> >>> Same speedup symptom as Totem
> >>>> and mplayer without audio:
> >>>> mplayer -ao null file
> >>> Back to normal speed.
> >> Hi,
> >> I'm experiencing a similar problem on a machine with an intel HDA. It
> >> happens only with a kernel 2.6.34-rc*. With a vanilla 2.6.33, everything
> >> is fine. Is your kernel the normal cooker kernel?
> >> Does anyone know if there are some update to alsa in this kernel
> >> compared to the vanilla kernel?
> > yes, there is some pcm_lib changes applied from 2.6.34-rc* because of
> > pulseaudio. Would be good to know if reverting these changes on 2.6.34 fixes
> > the problem:
> > ALSA: pcm_lib - fix xrun functionality
> > ALSA: pcm_native - fix runtime->boundary calculation
> > ALSA: pcm_lib - return back hw_ptr_interrupt
> > ALSA: pcm_core: Fix wake_up() optimization
> > ALSA: pcm_lib - fix wrong delta print for jiffies check
> > ALSA: pcm_lib: fix "something must be really wrong" condition
> > ALSA: pcm_lib - optimize wake_up() calls for PCM I/O
> > ALSA: pcm_lib - cleanup & merge hw_ptr update functions
> > ALSA: pcm_lib - add possibility to log last 10 DMA ring buffer positions
> > ALSA: pcm_lib.c - convert second xrun_debug() parameter to use defines
> I've done a bisection on a vanilla kernel, and it turned out to be
> 7b3a177b0d4f92b3431b8dca777313a07533a710, aka ALSA: pcm_lib: fix
> "something must be really wrong" condition .
> So I'd recommend to drop it from the mandriva kernel, and get confirmed
> it is fixed.
Ok adding alsa-devel to CC, may be the issue is known.
Eric, from later messages you only experience the problem when bdl_pos_adj
isn't set to 1 right?
Anyway Frank said that his bdl_pos_adj is set to 32 on two machines (hda-intel),
and on one of them the problem happens, while in the other not. I guess we
could have a problem then on commit
> See you,
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